I have a pair I bought on ebay about 10 yrs ago... for I think $400 or 450 plus shipping... around 550 total.. If they are in good shape (nothing broken, badges on grills, no dents in domes, properly re-foamed woofers) I would say they should fetch $550-650 plus shipping. Have a UPS shipping store profess. box & ship that way damage is out of your hands. That will cost the buyer more in shipping but worth it I think. I re-wired mine with new connectors, I had my woofers re-coned, they ROCK.. I would keep 'em.